Newbie on Armbian.   I have an Allwinner H313 (confirmed) box that I want to to use as a basic Samba server.    CPU:Allwinner H313Quad Core ARM Cortex A53   GPU:Mali-G31 OPenGL ES3.2  Memory:2GB  Flash:16GB  OS:Android 10.0   The actual firmware is a secure image and, no matter what procedure I do, I can't  load any other image but the secure one.   Debugging shows that 'fastbootd' has the "secure" flag set.   My intention is to crea